DUOL open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, DUOL options within 45 days held 5,648 calls and 4,183 puts in open interest, a put/call ratio of 0.74. The biggest call strike near the money was 135 and the biggest put strike 140.
DUOL open interest by strike, within 5% of the close
135 carried 381 calls and 140 carried 516 puts.
Open interest counts contracts still open after the close; it settles overnight. Large strikes are where dealer hedging is concentrated, which is why open interest feeds the gamma levels and max pain on the other DUOL pages.
These are the October 20, 2026 closing numbers. Members see DUOL's map move live all session.
Common questions
5,648 calls and 4,183 puts within 45 days at the October 20, 2026 close.
135 near the money, with 381 contracts.
140 near the money, with 516 contracts.
Compare: open interest by strike on other tickers
Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.